arXiv:quant-ph/0601145

Controlled Secure Direct Communication by Using GHZ Entangled State

Yan Xia, Chang-Bao Fu, Feng-Yue Li, Shou Zhang, Kyu-Hwang Yeon, Chung‐In Um

Published Jan 21, 2006• 30 citations

Abstract

We present a controlled secure direct communication protocol by using Greenberger-Horne-Zeilinger (GHZ) entangled state via swapping quantum entanglement and local unitary operations. Since messages transferred only by using local operations and a public channel after entangled states are successfully distributed, this protocol can protect the communication against a destroying-travel-qubit-type attack. This scheme can also be generalized to a multi-party control system.

DOI: 10.48550/arxiv.quant-ph/0601145

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